Acta Metallurgica Sinica(English letters) ›› 2009, Vol. 16 ›› Issue (5): 119-124.doi: 10.1016/S1005-8885(08)60278-2

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Direct computation of multiconductor transmission line
capacitance and charge distribution

XU Jun, LÜ Ying-hua, ZHANG Li-kun   

  1. School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2009-01-05 Revised:1900-01-01 Online:2009-10-30
  • Contact: XU Jun

Abstract:

The per-unit-length capacitance parameter of multiconductor transmission line (MTL) is commonly extracted with indirect matrix transform method, which is complex and time-consuming. To solve the problem, an improved method to directly compute the MTL capacitance is proposed, which can be applied in the transmission line structure with arbitrary shaped cross-section and arbitrary separate distance. This method imports voltage conversions and matrix operations to simplify the complexity, improves computational efficiency by about 600% with results as accurate as previous method. The novel method presents a clear charge distribution map of MTL, whereas precious method will experience a tortuous process to get charge distribution.

Key words:

multiconductor transmission line;capacitance matrix;charge distribution